Do we know if car 1 in Evan's video was some kind of "check out ride" gone wrong
That said, passing in corners is "optional" and those not getting a signal to pass in the corners may need to adjust expectations.
Is there a "rat out" method in place to note frequent offenders? In a blue or novice group, an instructor might search out the offenders instructor and have a conversation.
I will say, I have noticed in some other regions, that sometimes the biggest offender to the lack of signal
is the chief instructor!